package com.ruoyi.framework.config;

import com.ruoyi.common.utils.StringUtils;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import javax.sql.DataSource;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.boot.autoconfigure.SpringBootVFS;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.util.ClassUtils;

/**
 * Mybatis支持*匹配扫描包
 *
 * @author ruoyi
 */
//@Configuration
public class MyBatisConfig {
  @Autowired private Environment env;

  static final String DEFAULT_RESOURCE_PATTERN = "**/*.class";

  public static String setTypeAliasesPackage(String typeAliasesPackage) {
    ResourcePatternResolver resolver =
        (ResourcePatternResolver) new PathMatchingResourcePatternResolver();
    MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resolver);
    List<String> allResult = new ArrayList<String>();
    try {
      for (String aliasesPackage : typeAliasesPackage.split(",")) {
        List<String> result = new ArrayList<String>();
        aliasesPackage =
            ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
                + ClassUtils.convertClassNameToResourcePath(aliasesPackage.trim())
                + "/"
                + DEFAULT_RESOURCE_PATTERN;
        Resource[] resources = resolver.getResources(aliasesPackage);
        if (resources != null && resources.length > 0) {
          MetadataReader metadataReader = null;
          for (Resource resource : resources) {
            if (resource.isReadable()) {
              metadataReader = metadataReaderFactory.getMetadataReader(resource);
              try {
                result.add(
                    Class.forName(metadataReader.getClassMetadata().getClassName())
                        .getPackage()
                        .getName());
              } catch (ClassNotFoundException e) {
                e.printStackTrace();
              }
            }
          }
        }
        if (result.size() > 0) {
          HashSet<String> hashResult = new HashSet<String>(result);
          allResult.addAll(hashResult);
        }
      }
      if (allResult.size() > 0) {
        typeAliasesPackage = String.join(",", (String[]) allResult.toArray(new String[0]));
      } else {
        throw new RuntimeException(
            "mybatis typeAliasesPackage 路径扫描错误,参数typeAliasesPackage:"
                + typeAliasesPackage
                + "未找到任何包");
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return typeAliasesPackage;
  }

  public Resource[] resolveMapperLocations(String[] mapperLocations) {
    ResourcePatternResolver resourceResolver = new PathMatchingResourcePatternResolver();
    List<Resource> resources = new ArrayList<Resource>();
    if (mapperLocations != null) {
      for (String mapperLocation : mapperLocations) {
        try {
          Resource[] mappers = resourceResolver.getResources(mapperLocation);
          resources.addAll(Arrays.asList(mappers));
        } catch (IOException e) {
          // ignore
        }
      }
    }
    return resources.toArray(new Resource[resources.size()]);
  }

//  @Bean
//  public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {
//    String typeAliasesPackage = env.getProperty("mybatis.typeAliasesPackage");
//    String mapperLocations = env.getProperty("mybatis.mapperLocations");
//    String configLocation = env.getProperty("mybatis.configLocation");
//    typeAliasesPackage = setTypeAliasesPackage(typeAliasesPackage);
//    VFS.addImplClass(SpringBootVFS.class);
//
//    final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
//    sessionFactory.setDataSource(dataSource);
//    sessionFactory.setTypeAliasesPackage(typeAliasesPackage);
//    sessionFactory.setMapperLocations(
//        resolveMapperLocations(StringUtils.split(mapperLocations, ",")));
//    sessionFactory.setConfigLocation(new DefaultResourceLoader().getResource(configLocation));
//    return sessionFactory.getObject();
//  }
}
